Nano-WO3 Modified Carbon Nanotube Supported Pt Catalysts and Their Electrocatalytic Activity for Methanol Electro-Oxidation

作者：Zhou Yang; Chu You-Qun; Liu Wei-Ming; Ma Chun-An^*

来源：Acta Physico - Chimica Sinica, 2013, 29(2): 287-292.

DOI：10.3866/PKU.WHXB201211261

• Direct methanol fuel cell
• Carbon nanotube
• Tungsten trioxide
• Electro-catalysis

Nano-WO3-modified carbon nanotube supported Pt nanoparticles (Pt-WO3/CNT) with uniform dimensions were prepared by adsorption and decomposition of ammonium meta-tungstate (AMT) on the surface of CNTs pretreated with HNO3, and H2PtCl6 as the Pt precursor. The samples were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). The Pt nanoparticles had a face-centered cubic crystal structure, and were well dispersed on the external walls and ports of the WO3/CNTs. The electrocatalytic activity of the samples towards the oxidation of methanol was investigated using cyclic voltammetry and chronoamperometry. The results indicated that the Pt-WO3/CNT catalysts exhibited higher electrocatalytic activity, better anti-poisoning ability, and good stability during methanol oxidation compared with Pt/CNTs used for acid oxidation treatments.

• 出版日期2013-2
• 单位浙江工业大学; 江西理工大学